/Engine/Source/Runtime/Engine/Public/SceneManagement.h
Collector used to gather resources for the material mesh batches. It is also the actual owner of the temporary, per-frame resources created for each mesh batch. Mesh batches shall only weak-reference the resources located in the collector.
class FRayTracingMeshResourceCollector : public [FMeshElementCollector](API\Runtime\Engine\FMeshElementCollector)